Abstract: A handle attachment structure for a bag includes: a bag body; a handle having a through hole in each of ends thereof; an attachment fixed to the bag body while accommodating the end of the handle in a recess formed therein, the attachment including therein a stopped spindle hole and a through spindle hole aligned to each other across the recess, and a coming-out prevention hole crossing the through spindle hole; a handle spindle fixed in the stopped spindle hole and the through spindle hole while passing through the through hole in the handle; and a coming-out prevention spindle fixed in the coming-out prevention hole while crossing the through spindle hole.

Abstract: A handle attachment structure for a bag includes: a bag body; a handle having a through hole in each of ends thereof; an attachment fixed to the bag body while accommodating the end of the handle in a recess formed therein, the attachment including therein a stopped spindle hole and a through spindle hole aligned to each other across the recess, and a coming-out prevention hole crossing the through spindle hole; a handle spindle fixed in the stopped spindle hole and the through spindle hole while passing through the through hole in the handle; and a coming-out prevention spindle fixed in the coming-out prevention hole while crossing the through spindle hole.

Abstract: A portable housing case particularly for use in receipt of a prescribed musical instrument is basically constituted by a pair of a base board and a top board, which are assembled together using hinges to form a shell, which can be freely closed or opened. The base board has a band-shaped hollow elongated in a longitudinal direction, and the top board has a band-shaped projection elongated in a longitudinal direction, wherein they are formed in prescribed dimensions to be engaged with each other when the case is stacked with the other case. Thus, it is possible to establish a stable stacking relationship between portable housing cases, regardless of sizes and shapes.